Originally Posted by Nascar-TA
Thanks for the input! Now would you do the 428-440 using a 400 block in order to get the smaller main bearing or would you use a 428 block?
What do you think of the 4 inch bore with a 3 inch stroke and a 6 inch rod?
Another question, can you have a loopy cam with a turbo? I love the sound, even of a small one.
I don't feel there's any need for the smaller main Bearing if your not spinning it high. I shift at 5800 plenty of longevity in my set up. Mine was a 428 block and I loved that engine, I split a cylinder when I turned it up to 30 psi with 10.5 to 1 compression on my first turbo outing, learned fast about boost greed. Lmao That engine had a TON of track passes on it as a naturally aspirated engine before too. Probably was 4 + years old at 160 track passes a year. And the rotating assembly was used out of my buddy's car with god knows how many passes on it before that.
It went 122 mph in the 1/8 though so it was on a nice run., ran 10 flat for the first 3 runs off the trailer though on a new ( completed soup to nuts in 48 hours including building the headers) build so couldn't complain too much. It was carberated, no intercooler and completely not optimized.
My cam sounds quite lopey and it's got very little overlap so you don't have to give that sound up, that being said it'll be more manageable if it's not as far as street manners.
I don't really like anything exotic for combos too much of a pain, I like the kiss rule.
The simpler the better for me.
As for an aftermarket block, I've heard more people have issues with aftermarket than stock personally. GM did a lot of R&D and they put more money and testing into their products than any after market company can or will so I run stock items mostly but modified to my needs. Unless it's something like con rods which were just junk thanks to the bean counters. But they worked for their mission of 3500 rpm daily drivers.
Jspont is just mad at his block right now